Journal article
In Situ Grown Iron Oxides on Carbon Nanofibers as Freestanding Anodes in Aqueous Supercapacitors
Advanced engineering materials, v 20(6), pp 1-10
01 Jun 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Iron oxides are promising materials for application in supercapacitors owing to their high theoretical redox capacitance (2299Fg(-1)). Nevertheless, iron oxide nanostructures experience constant stress during cycling due to repeated expansion and contraction resulting in structural degradation. Such structural instability makes it challenging to develop freestanding and binder-free iron oxide-based electrodes with superior electrochemical performance. In this work, the authors report a facile way to fabricate iron-based carbon nanofibers using a simple and fast technique of electrospinning followed by an in situ electrochemical conversion. The final composite electrode consists of iron oxide embedded in carbon nanofibers which possesses a robust contact and support in addition to freestanding and binder-free nature. The electrodes exhibit a capacitance of 460Fg(-1) at a galvanostatic discharge current density of 1Ag(-1) and retains approximate to 82% of its capacitance after 5000 cycles in a wide negative potential window of 1.3V. Extensive spectroscopic investigation is conducted to monitor phase transformation of the electrodes during oxidation and reduction to provide a understanding of the redox mechanism during electrochemical cycling.
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Details
- Title
- In Situ Grown Iron Oxides on Carbon Nanofibers as Freestanding Anodes in Aqueous Supercapacitors
- Creators
- Rahul Pai - Drexel UniversityArvinder Singh - Drexel UniversitySilas Simotwo - Drexel UniversityVibha Kalra - Drexel University
- Publication Details
- Advanced engineering materials, v 20(6), pp 1-10
- Publisher
- Wiley
- Number of pages
- 10
- Grant note
- CMMI-1469170; CMMI-1537827 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000435928600026
- Scopus ID
- 2-s2.0-85043506016
- Other Identifier
- 991019167543804721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary